Proof.Fit

Isoleucine

13 benefits mapped to clinical evidence across supplements.

Benefit Evidence

Main Effects
Metabolism

Glucose/insulin: -14%

BCAA/isoleucine: ↓

BP: -4 mmHg

Strong
2,409
Protein source

BCAA rises, protein gain

1. Isoleucine up

2. Weight/anabolism up

Moderate
642
Vitality

BCAAs, growth

BCAAs, survival

Moderate
741
Weight management

↓BCAAs, ↑weight loss

↓hunger, ↓intake

↑satiety hormones

Moderate
1,304
Body composition

Leaner tissue, +0.4 kg

Protein balance, +38 mg N/kg/d

Moderate
423
Muscle growth

MPS/anabolism +3.5x

Lean mass/growth +1.0%

Moderate
355
Nutrition source

Nitrogen balance +38.3

Plasma isoleucine + BCAA

Moderate
454
Blood sugar

↓ glucose AUC

↑ insulin/GLP-1

−14% glucose AUC

Moderate
1,284
Immune support

Immune markers +10%

Immune suppression -5

Moderate
363
Tissue repair

Protein repair +

Damage markers -

Moderate
274
Muscle maintenance

Protein balance +38.3

Muscle breakdown ↓

Moderate
227
Appetite regulation

Amino acids ↓ hunger

Amino acids ↓ intake

Amino acids ↑ satiety

Weak
106
Exercise recovery

Less muscle damage

Faster strength recovery

Higher protein synthesis

Weak
40